Joseph heroux



(No Mqdel.)

J. H-EROUX.

AUTOMATIC GAS EXTINGUISHBR., No. 374,066.

Patented Nov. 29, 1887.

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yUNITED STATES i PATENT OFFICE.

JOSEPH HROUX, OF YAMAOHICHE, QUEBEC, CANADA.

AUTOMATIC GAS-EXTINGUISHER.

SPECIFICATION forming part of Letters Patent No. 374,066, dated November29, 1887.

Application tiled February 9, 1887. Serial No. 227,073. (No model.)

To aZZ wwm it may concern:

Be it known that I, JosErH HERoUx, a citizen of the Dominion of Canada,residing at Yamachiche, county of St. Maurice, Province of Quebec andDistrict of Three Rivers, Canada, have invented certain new and usefulImprovements in Automatic Gas-Extinguishers; and I do hereby declarethat the following is a full,

clear, and exact description of the same, such as will enable othersskilled in the art to which it appertains to make and use the same.

My invention has reference to an automatic gas-extinguisher, having forits object the prevention of the numerous accidents arising from theignorance or negligence of parties blowing the gas out, instead ofcutting off the supply.

Figure -1 is a side elevation; Fig. 2, a plan view. Fig. 3 is a backview showing position o1 movable vertical piece when gas is cut off, andFig. 4. is also a back view showing position of movable Vertical piecewhen gas is opened.

A is an ordinary gas-bracket, to which is secured my apparatus by meansof the thumbscrew B. As can beseen, the gas-flame C heats the smallmetallic rods D,'E, and F, consequently'forcing them to expand; So doingthey act on the levers G H and bell-crank I in the following manner.RodE, being joined at one end to frame .I at e, and at the other end tolever H at e', pushes e outward when it expands; but as lever H isfulcrumed at h and h e is shorter than hf, end f moves inward a greaterdistance than e moves outward. On the other hand, as rod Fis joined atftlever H and at f to lever G, endf also moves outward, for it is` notonly forced to do so by the expansion of E acting on lever H, but alsoby the expansion of rod F, so that end f moves outward a greaterdistance than the sum of the expansions of rods E and F, on account ofthe unequal leverage of H. Now, lever G is 'fulcrumed at g, and as f gis shorter than g d,

d moves inward a greater Vdistance than f moves outward, and as rod Djoins lever G at d and bell-crank I at d the distance that end d willmove outward will be equal to the distance that end d moves inward plusthe expansion of rod D. N ow, if we consider bellcrank I, it will beseen that arm d i is shorter than arm t z',- eonsequently t" will movedownward a greater distance than d will move outward. However, d t'could be made equal to i i if t" moved downward a sufiicient distance byso doing. If the light is now extinguished, the rods D, E, and F wouldlose their heat, consequently contract, andthe exact opposite effectswould take place-that is, the end t" of bell-crank I would rise insteadof move downward. Now, as can be seen in Fig. 1, the gas-stopper L isprovided with a spiral spring, M, placed on its stem. This spring isattached at Z to stem of stopper L, so that-when L is in position shownin Figs. 1 and 4 the springM 'tends to bring Vstopper L inposition shownin Fig. {cI-that is, to cut off the supply of gas. To keep stopper L inposition shown in Figs. l and i it is provided with an arm, N, having asmall slot, n, in its outer end. This little slot n serves to receiveend o of movable vertical piece O, thereby keeping stopperL open. As canb'e seen by examining Figs. 3 and 4, end o of vertical piece O passesthrough an aperture in frame J (shown in dotted lines,) which is smallerat the top than at the bottom, so that when end o passes through slotnto hold stopper L open, the latter, tending to close under the inuenceof spring M, forces portion P of O against end t" of bell-crank I, sothat when end i is going down, under the influence of the expansion ofrods-D, E, and F, there comes a moment when it passes beyond check p,and as O is-pressing against i vertical piece O takes position shown inFig-4. Now, when the contraction takes place, end i rises and liftsverticalpiece O, so that there comes a monientwhen o rises out of slotn, and at the same time stopper L closes immediately, arm N being nomore kept in position by end o, at the same time vertical piece O,beingno longer pressed against i', is thrown back in position shown in Fig. 3by means of spring W, which takes its point of support on yoke V, whichalso serves to keep O in position. Vertical piece O being thrown off,end'i' falls by its own weight until it is kept up by check o, and is nowready again to keep arm N in position. O is made of two pieces kepttogether by means of screws m and y, and is provided With the slot X, soas to adjust it to its rightlength. Gas-bracket A is also provided withstopper Y, so that the light may be moderated at will. Now, it caneasily be seen that if the gas is blown out, in-

` at one end at m to bracket A and at the other IOO stead of being cutoff, the rods D, E, and F will contract, and consequently stopper L willcut off the supply of gas automatically. Of course when gas is lightedarm N has to be drawn back and hooked on end o, so as to keep stopper Lopen. The gas may also be cut off and turned by means of stopper Y; butin any ease stopper L will always have to be opened. Having described myinvention,wl1at I claim7 and desire to secure by Letters Patent, is-

The combination, with a frame,-J, provided wit-h levers I-I and G andmetallic rods D, E,

and F, of a vertical support provided with yoke V, a bell-crank, I, arod, O, and means for attaching said parts to a gas-bracket, and thegascoek provided with spring M and arm N all constructed substantiallyas described and shown.

In testimony whereof I have afxed my signature in presence of twosubscribed Witnesses. 2o

JOSEPH HEROUX.

In presence of- NARCISSE E. LAFoRcE, L. REs'rHER.

